Jabs did the red circle above. In the other 1924 record, we accept the "In 18Kt. 25-year" in first 1923 ad refers to 154.
We do the opposite for the "Bulova Quality filled" in the red circle in 1924 ad. We don't accept the "Bulova Quality Filled" refers to the 154.

Yea I agree Bobbee. We can see all the watches on the left side of the ad you used a few comments up (posted again below). The solids all end with a last digit of 4. The fills, regardless of gold karat content, all end with a last digit of 3.